Classification
600 - Technology
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
330 - Economics
2
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
800 - Literature & rhetoric
1
900 - History & geography
1